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20227 (1997 WS35)
Classification: Main-belt Asteroid          SPK-ID: 2020227
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07671148915987464 8.6833e-09  
a 2.516379207558004 8.8098e-09 au
q 2.323344011255284 2.0762e-08 au
i 6.75932910296273 4.1028e-07 deg
node 55.03966650400382 6.1852e-06 deg
peri 192.3835032603566 1.6726e-05 deg
M 95.68102665240345 1.3201e-05 deg
tp 2458812.987349521030
(2019-Nov-25.48734952)
5.3451e-05 TDB
period 1458.016903175911
3.99
7.6567e-06
2.096e-08
d
yr
n .2469107177124171 1.2966e-09 deg/d
Q 2.709414403860723 9.4856e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2591  
   data-arc span      11408 days (31.23 yr)  
   first obs. used      1989-10-26  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:15:28  

Additional Information
 Earth MOID = 1.30881 au 
 Jupiter MOID = 2.29437 au 
 T_jup = 3.445 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.45   n/a E2021B10  
diameter diameter 5.833 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20227 (1997 WS35)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WS35 = 1989 UM6 = 2000 TQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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